Air humidifier



1.1 is upper perspective view of an air humidifier, showing our new design;

1.2 is a front elevation view thereof;

1.3 is a rear elevation view thereof;

1.4 is a left side elevation view thereof;

1.5 is a right side elevation view thereof;

1.6 is a top view thereof; and

1.7 is a bottom view thereof. 

CLAIM The ornamental design for an air humidifier, as shown and described. 